L. Frank Baum 
Dorothy and the Wizard in Oz 

Dorothy and the Wizard in Oz is the fourth book set in the Land of Oz written by L. Frank Baum and illustrated by John R. Neill. Dorothy, Eureka, Jim, Zeb, and the buggy land in the underground Land of the Mangaboos, a race of vegetable people who grow on vines. Just as they are about to be sentenced to death by the Mangaboos, a hot air balloon descends, and in the basket is the former Wizard of Oz, whom Dorothy last saw as he floated away into the sky from the Emerald City at the end of the earlier book The Wizard of Oz.